Method and apparatus for performing the register functions for a plurality of metering devices at a common node

• US 5,933,092 A
• Filed: 03/26/1997
• Issued: 08/03/1999
• Est. Priority Date: 08/02/1994
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Hardy, Samuel G., Ouellette, Maurice Joseph
• Primary Examiner(s): Zimmerman, Brian
• Assistant Examiner(s): Edwards, Jr., Timothy
• Application Number:
  US08/824,575
• Time in Patent Office: 860 Days
• Field of Search: 340/310.01, 340/870.02, 340/870.05, 340/870.07, 340/870.28, 340/870.11, 364/464.22, 364/483, 455/3.3
• US Class Current: 340/870.02
• CPC Class Codes: H02J 13/00001 characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00007 using the power network as support for the transmission
• CPC Class Codes: H02J 13/00022 using wireless data transmission
• CPC Class Codes: H02J 2213/10 using simultaneously two or more different transmission means
• CPC Class Codes: H04Q 9/14 Calling by using pulses
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/40 Display of information, e.g. of data or controls
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission
• CPC Class Codes: Y04S 40/126 using wireless data transmission

Abstract

A method and apparatus of the present invention includes a common node of a power line communications system for individually performing the register functions for a plurality of electrical metering devices operably connected to the node. The power line communications system includes at least one node having a plurality of registers, a respective one of which is associated with a respective electrical metering device. The electrical metering devices connected via the power lines to the node measure the power consumption of the electrical load associated therewith and transmit a signal indicative of the measured power consumption to the node and, in particular, to the respective register of the node associated with the electrical metering device. The node individually determines the power consumed by each electrical load operably connected to the node based upon the received signals. The results of such calculations are stored in the register associated with each respective electrical metering device. The stored results are also periodically transmitted to the system control center of the power line communications system. Thus, the register functions for a plurality of relatively simple electrical metering devices may be centralized at a common node.

Claims

1. Apparatus for receiving metering data from at least one electricity meter coupled to an electrical load and for communicating data to a remotely located receiver, said apparatus configured to be located remote from the electricity meter and comprising:

a receiver for receiving the metering data;

a register for performing at least one power consumption computation using the received metering data; and

a transmitter for transmitting at least the power consumption computation result to the remotely located receiver.

2. Apparatus in accordance with claim 1 wherein said register comprises a memory for storing a result of the power consumption computation, and said memory comprises a plurality of register storage locations and said register is configured to perform a plurality of power consumption computations using the received metering data, and power consumption computation results are stored in respective register storage locations.

3. Apparatus in accordance with claim 1 wherein said apparatus is configured to receive metering data from a plurality of electricity meters coupled to respective electrical loads, and wherein said register comprises a memory for storing a result of the power consumption computation, and said memory comprises a plurality of register storage locations, said register configured to perform a plurality of power consumption computations using the received metering data from each respective electricity meter, and power consumption computation results for metering data from respective electricity meters are stored in respective register storage locations.

4. Apparatus in accordance with claim 1 wherein the remotely located receiver is located at a system control center.

5. Apparatus in accordance with claim 1 wherein said at least one power consumption calculation comprises at least one of a kilowatt hour computation, a time of use computation, a demand computation, a power factor computation, an apparent power computation, and a reactive volt amperes computation.

6. Apparatus in accordance with claim 1 wherein said apparatus receiver is a power line receiver.

7. Apparatus in accordance with claim 1 wherein said apparatus receiver is a radio receiver.

8. A system, comprising:

at least one electricity meter coupled to an electrical load, said meter comprising a transmitter for transmitting metering data;

a system control center comprising a receiver for receiving signals; and

at least one intermediate unit comprising;

a receiver for receiving metering data;

a register for performing at least one power consumption computation using the received metering data; and

a transmitter for transmitting at least the power consumption computation result.

9. A system in accordance with claim 8 wherein said intermediate unit comprises a memory for storing a result of the power consumption computation, and said intermediate unit memory comprises a plurality of register storage locations and said intermediate unit register is configured to perform a plurality of power consumption computations using the received metering data and to store power consumption computation results in respective register storage locations.

10. A system in accordance with claim 8 further comprising a plurality of meters coupled to respective electrical loads, and wherein said intermediate unit comprises a memory for storing a result of the power consumption computation, and said intermediate unit memory comprises a plurality of register storage locations, said intermediate unit register configured to perform a plurality of power consumption computations using received metering data, and power consumption computation results for metering data from respective electricity meters are stored in respective register storage locations.

11. A system in accordance with claim 8 wherein said meter continuously transmits metering data.

12. A system in accordance with claim 8 wherein said meter periodically transmits metering data.

13. A system in accordance with claim 8 wherein said at least one power consumption calculation comprises at least one of a kilowatt hour computation, a time of use computation, a demand computation, a power factor computation, an apparent power computation, and a reactive volt amperes computation.

14. A system in accordance with claim 8 wherein said intermediate unit receiver is a power line receiver.

15. A system in accordance with claim 8 wherein said intermediate unit receiver is a radio receiver.

16. An electricity meter, comprising:

a meter unit configured to be coupled to a power line supplying power to an electrical load and for measuring the power consumption of an electrical load from the power line;

a reduced functionality register, coupled to said meter unit, for performing at least one power consumption computation using the power consumption measured by said meter unit; and

a communications unit, coupled to said reduced functionality register, for transmitting a signal representative of a power consumption computation result to an external register located remote from said meter.

17. A meter in accordance with claim 16 wherein the power consumption computation is kilowatt hours.

18. A meter in accordance with claim 16 wherein said communications unit comprises a radio transmitter.

19. A meter in accordance with claim 16 wherein said communications unit comprises a power line transmitter.

20. A meter in accordance with claim 16 wherein said meter is configured to continuously transmit metering data.

21. A meter in accordance with claim 16 wherein said meter is configured to periodically transmit metering data.

22. A method for transmitting energy consumption related data in a system including at least one electricity meter coupled to an electrical load, the meter including a transmitter for transmitting metering data, a system control center, and at least one intermediate unit including a receiver for receiving metering data, a register for performing at least one power consumption computation using the received metering data, and a transmitter for transmitting at least the power consumption computation result, said method comprising the steps of:

transmitting metering data from the meter transmitter;

receiving the metering data at the intermediate unit receiver;

controlling the register to perform at least one power consumption computation using the received metering data; and

transmitting at least the one power consumption computation result to the system control center.

23. A method in accordance with claim 22 wherein transmitting metering data from the meter transmitter comprises the step of continuously transmitting metering data from the meter transmitter.

24. A method in accordance with claim 22 wherein transmitting metering data from the meter transmitter comprises the step of periodically transmitting metering data from the meter transmitter.

25. A method in accordance with claim 22 wherein the at least one power consumption calculation comprises at least one of a kilowatt hour computation, a time of use computation, a demand computation, a power factor computation, an apparent power computation, and a reactive volt amperes computation.